10/13/2005 AT 02:30 PM EDT
Mayim Bialik, star of the '90s show Blossom,
and her husband, Michael Stone, are parents of a baby boy, born Tuesday, the actress's rep tells PEOPLE exclusively.
"Mother and baby are both fine," says the rep. This is the couple's first child.
on which Bialik played the wholesome Blossom Russo, debuted in 1991 and ran until 1995. After the show went off the air, Bialik, now 29, went through a rebellious phase, she told PEOPLE in 2000 – the same year she graduated from UCLA.
The San Diego native also went on to work on a Ph.D. in neuroscience – and met Stone at school.
As far as acting is concerned, since her sitcom, Mayim (which means "water" in Hebrew) has done mostly voiceover work – including Kim Possible: The Secret Files
and X2: Wolverine's Revenge.
She has also made recent guest appearances on Curb Your Enthusiasm
and Fat Actress